{"id":"PYSEC-2026-1353","summary":"Exiv2 allows Use After Free","details":"### Impact\nA heap buffer overflow was found in Exiv2 versions v0.28.0 to v0.28.4. Versions prior to v0.28.0, such as v0.27.7, are **not** affected. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a crafted image file.\n\nNote that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `fixiso`.\n\n### Patches\nThe bug is fixed in version v0.28.5.\n\n### References\nIssue: https://github.com/Exiv2/exiv2/issues/3168\nFix: https://github.com/Exiv2/exiv2/pull/3174\n\n### For more information\nPlease see our [security policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.","aliases":["CVE-2025-26623","GHSA-38h4-fx85-qcx7"],"modified":"2026-07-07T17:47:35.882542261Z","published":"2026-07-07T14:34:50.155710Z","references":[{"type":"WEB","url":"https://github.com/Exiv2/exiv2/security/advisories/GHSA-38h4-fx85-qcx7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-26623"},{"type":"WEB","url":"https://github.com/Exiv2/exiv2/issues/3168"},{"type":"WEB","url":"https://github.com/Exiv2/exiv2/pull/3174"},{"type":"WEB","url":"https://github.com/jim-easterbrook/python-exiv2/commit/4cc875e392f9e0bc705fe03d929b9a382b78dae4"},{"type":"PACKAGE","url":"https://github.com/Exiv2/exiv2"},{"type":"PACKAGE","url":"https://pypi.org/project/exiv2"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-38h4-fx85-qcx7"}],"affected":[{"package":{"name":"exiv2","ecosystem":"PyPI","purl":"pkg:pypi/exiv2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.28.0"},{"fixed":"0.28.5"}]}],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/exiv2/PYSEC-2026-1353.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"}]}